Talk:HP-12C

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Mathematics (Rated Start-class, Low-importance)
WikiProject Mathematics
This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of Mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Mathematics rating:
Start Class
Low Importance
 Field:  General

Bug[edit]

At least some of the platinum calculators had an internal bug in the Internal rate of return algorith. For example, the correct IRR of the following cash flow is 0.20%, but some calculator may give a different result:

-11950
  4000
  3000
  5000

Also, some believe that the original "gold" HP-12c calculator has a stronger case, better keys and is faster than the new platinum model. I don't know if these comments should be included in a "critcism" section.

Vintage HP 12C[edit]

I wanted to love the HP 12CP (Platinum). I really did.

I finally left the social service field to begin a new career in real estate. I dug out my old HP 12C from college which I actually never used. After downloading the manuals and familiarizing myself with it, I can see where the rabid devotion for this device comes from. HP produced a truly remarkable product!

Sadly, the production values have clearly been lost. I purchased my HP 12C in the late 80's or early 90's. The keys give excellent tactile feedback, the display is still clear, and the rubber pads are intact.

When I saw the ads for the HP 12CP, I thought this could only be making something already good even better. Yeah, right! Half the times, the keys being pressed don't even register. YOu can barely see the orange text against the silver background. I do apprectiate the improved speed, but that's about the only addition of positive note IMHO. For the most part, I still use my original and keep the 12CP as backup.

6502 core[edit]

There was an unsubstantiated claim that the later Generalplus chip uses an 8502 core - I've rectified that. I don't see that there could even be such a thing as an 8502 core, as the 8502 chip itself uses a 6502 core. — Preceding unsigned comment added by 87.114.43.10 (talk) 13:53, 13 November 2015 (UTC)

Edit to add: OK, I see a source of confusion. Sunplus, a predecessor company of Generalplus, sold a microcontroller called the 8502 with a 6502 core. This four digit number is unrelated to the 8502 made by MOS Technology and/or Commodore Semiconductor Group. We see from Eric's page that Generalplus use quite different numbering for their microcontrollers, although one of their offerings might be the same thing as was previously known as the Sunplus 8502. See the interview at http://www.transformingnetworkinfrastructure.com/news/2008/06/23/3512437.htm — Preceding unsigned comment added by 87.114.43.10 (talk) 14:10, 13 November 2015 (UTC)

External links modified[edit]

Hello fellow Wikipedians,

I have just added archive links to one external link on HP-12C. Please take a moment to review my edit. You may add {{cbignore}} after the link to keep me from modifying it, if I keep adding bad data, but formatting bugs should be reported instead. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether, but should be used as a last resort. I made the following changes:

When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{Sourcecheck}}).

You may set the |checked=, on this template, to true or failed to let other editors know you reviewed the change. If you find any errors, please use the tools below to fix them or call an editor by setting |needhelp= to your help request.

  • If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
  • If you found an error with any archives or the URLs themselves, you can fix them with this tool.

If you are unable to use these tools, you may set |needhelp=<your help request> on this template to request help from an experienced user. Please include details about your problem, to help other editors.

Cheers.—cyberbot IITalk to my owner:Online 06:54, 28 March 2016 (UTC)